Dear esteemed colleagues, We are honored to invite you to participate in the advanced clinical teaching course on pain medicine led by Professor Li Zhengya. This special invitation is extended to you as a token of appreciation for your ongoing support and contributions to our Summer Without project in Gannan Mongol West. The course aims to promote human health community and contribute to the well-being of local people through education and expertise sharing. We are confident that your participation will be a valuable addition to this initiative, and we look forward to seeing you there! Sincerely, Gannan Mongol West Summer Without project team